Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 02

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 02

Suitable Physico-chemical parameters in earthen pond:
Salinity, water temperature, water pH, soil pH and dissolved oxygen (DO) were recorded as 2-8‰ and 3-8‰, 28-30°C and 22-25°C, 5.5-7 and 6-7, 6 and 6.2 and 8.85ml/L and 8.50ml/L in the first and second experiment respectively.

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond Part 1

Crab/ Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in Pond : Part 01

 Introduction

Mud crab Scylla serrata (locally called “Jati or Haba Kakra”) is broadly distributed in the Bangladesh and one of the most renowned culture species, which has great economic value. We can culture it in earthen pond. Scylla serrata fattening in earthen pond basically attempted in the coastal area of Bangladesh. 

Earthen pond preparation:
Tidal water pond is highly suitable for mud crab fattening. Before construction of dike and switch gate first existing water should be drain out from the pond and remain for sun burn at least 1.5 weeks. 70-80 decimal / shotansho pond is highly suitable for mud crab culture. Total pond area was equally divided into four small ponds. All the ponds were fenced by bamboo slits at about 6² deep in the soil to prevent crab from escaping and burrowing (Fig. 1). CaCO3 was applied at a rate of 100 kg/ha to increase the pH value.


Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 02

Crab / Mud crab (Scylla serrata) culture technique Or Mud Crab Scylla serrata fattening in bamboo cage : Part 02

Growth and mortality rate :

Growth rate (0.92 to 1.64 g/indiv./day for male and 0.61 to 1.06 g/indiv./day for female) and mortality rate (3-6% for both male and female crab) were observed in cages. Growth rate of male crabs was found higher than the female crabs in cages.